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SubjectRe: [PATCH v2] kbuild: re-implement detection of CONFIG options leaked to user-space
Hi Masahiro,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[cannot apply to v5.3-rc3 next-20190809]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

config: i386-defconfig (attached as .config)
compiler: gcc-7 (Debian 7.4.0-10) 7.4.0
# save the attached .config to linux build tree
make ARCH=i386

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <>

All warnings (new ones prefixed by >>):

>> warning: include/uapi/asm-generic/fcntl.h: leak CONFIG_64BIT to user-space
>> warning: include/uapi/linux/raw.h: leak CONFIG_MAX_RAW_DEVS to user-space
>> warning: include/uapi/linux/pktcdvd.h: leak CONFIG_CDROM_PKTCDVD_WCACHE to user-space
>> warning: include/uapi/linux/hw_breakpoint.h: leak CONFIG_HAVE_MIXED_BREAKPOINTS_REGS to user-space
>> warning: include/uapi/linux/eventpoll.h: leak CONFIG_PM_SLEEP to user-space
>> warning: include/uapi/linux/elfcore.h: leak CONFIG_BINFMT_ELF_FDPIC to user-space
>> warning: include/uapi/linux/atmdev.h: leak CONFIG_COMPAT to user-space
>> warning: arch/x86/include/uapi/asm/mman.h: leak CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS to user-space
>> warning: arch/x86/include/uapi/asm/auxvec.h: leak CONFIG_IA32_EMULATION to user-space
>> warning: arch/x86/include/uapi/asm/auxvec.h: leak CONFIG_X86_64 to user-space
1 real 10 user 4 sys 762.47% cpu make INSTALL_HDR_PATH=/tmp/usr/src/linux-headers-i386-defconfig-723c8e514c09af9516a181307cdaa1ee6a874ffd headers_install

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation
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